<?php  // $Id: action.php,v 1.5 2007/10/10 06:34:20 nicolasconnault Exp $

///////////////////////////////////////////////////////////////////////////
//																	   //
// NOTICE OF COPYRIGHT												   //
//																	   //
// Moodle - Modular Object-Oriented Dynamic Learning Environment		 //
//		  http://moodle.com											//
//																	   //
// Copyright (C) 1999 onwards  Martin Dougiamas  http://moodle.com	   //
//																	   //
// This program is free software; you can redistribute it and/or modify  //
// it under the terms of the GNU General Public License as published by  //
// the Free Software Foundation; either version 2 of the License, or	 //
// (at your option) any later version.								   //
//																	   //
// This program is distributed in the hope that it will be useful,	   //
// but WITHOUT ANY WARRANTY; without even the implied warranty of		//
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the		 //
// GNU General Public License for more details:						  //
//																	   //
//		  http://www.gnu.org/copyleft/gpl.html						 //
//																	   //
///////////////////////////////////////////////////////////////////////////

require_once '../../../config.php';
require_once $CFG->dirroot.'/grade/lib.php';

$courseid = required_param('id', PARAM_INT);
$action   = required_param('action', PARAM_ALPHA);
$eid	  = required_param('eid', PARAM_ALPHANUM);

/// Make sure they can even access this course
if (!$course = get_record('course', 'id', $courseid)) {
	print_error('nocourseid');
}
require_login($course);
$context = get_context_instance(CONTEXT_COURSE, $course->id);

// default return url
$gpr = new grade_plugin_return();
$returnurl = $gpr->get_return_url($CFG->wwwroot.'/grade/edit/tree/index.php?id='.$course->id);

// get the grading tree object
$gtree = new grade_tree($courseid, false, false);

// what are we working with?
if (!$element = $gtree->locate_element($eid)) {
	error('Incorrect element id!', $returnurl);
}
$object = $element['object'];
$type   = $element['type'];


switch ($action) {
	case 'hide':
		if ($eid and confirm_sesskey()) {
			if (!has_capability('moodle/grade:manage', $context) and !has_capability('moodle/grade:hide', $context)) {
				error('No permission to hide!', $returnurl);
			}
			if ($type == 'grade' and empty($object->id)) {
				$object->insert();
			}
			$object->set_hidden(1, true);
		}
		break;

	case 'show':
		if ($eid and confirm_sesskey()) {
			if (!has_capability('moodle/grade:manage', $context) and !has_capability('moodle/grade:hide', $context)) {
				error('No permission to show!', $returnurl);
			}
			if ($type == 'grade' and empty($object->id)) {
				$object->insert();
			}
			$object->set_hidden(0, true);
		}
		break;

	case 'lock':
		if ($eid and confirm_sesskey()) {
			if (!has_capability('moodle/grade:manage', $context) and !has_capability('moodle/grade:lock', $context)) {
				error('No permission to lock!', $returnurl);
			}
			if ($type == 'grade' and empty($object->id)) {
				$object->insert();
			}
			$object->set_locked(1, true, true);
		}
		break;

	case 'unlock':
		if ($eid and confirm_sesskey()) {
			if (!has_capability('moodle/grade:manage', $context) and !has_capability('moodle/grade:unlock', $context)) {
				error('No permission to unlock!', $returnurl);
			}
			if ($type == 'grade' and empty($object->id)) {
				$object->insert();
			}
			$object->set_locked(0, true, true);
		}
		break;
}

redirect($returnurl);
//redirect($returnurl, 'debug delay', 5);

?>
